Recycled sponge (environmentally friendly cotton) is also called compression sponge. It is a new type of product. It is formed by pulverizing and stirring the sponge, and then steaming it at high temperature ~ compression foaming. Its use value is not lower than ordinary sponge, and in some products, other materials cannot be replaced. Low price, good elasticity, good resistance, no odor, can be made into various densities, specifications and shapes according to customer needs.